Chairs: Pascal Thubert Thomas Watteyne Etherpad for minutes:

1. 27 May 2016 Webex IPv6 over the TSCH mode of IEEE 802.15.4e Chairs: Pascal Thubert Thomas Watteyne Etherpad for minutes: http://etherpad.tools.ietf.org:9000/p/6tisch?useMonospaceFont=true

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4. Agenda • Administrivia [3min] • Agenda bashing • Approval minutes from last meeting • Update Security Discussions [5min] • 6P error code for indicating schedule/cells are locked [20min] • interaction between 6top and SF [20min] • AOB [2min] 4 4 4 4 4

5. Administrivia

6. Admin is trivia • Approval Agenda • Approval minutes 6 6 6 6

7. Update Security Discussions

9. 6P error code for indicating schedule/cells are locked

10. OLD • A node MAY support concurrent 6P Transactions from different neighbors. In this case, in Figure 1, node C can have a different ongoing 6P Transaction with nodes B and E. In case a node does not have enough resources to handle concurrent 6P Transactions from different neighbors, when it receives a 6P Request from a neighbor while already handling a different request from a different neighbor, it MUST reply to that second request with a 6P Response with return code IANA_6TOP_RC_BUSY. • NEW • A node MAY support concurrent 6P Transactions from different neighbors. In this case, in Figure 1, node C can have a different ongoing 6P Transaction with nodes B and E. In case a node does not have enough resources to handle concurrent 6P Transactions from different neighbors, when it receives a 6P Request from a neighbor while already handling a different request from a different neighbor, it MUST reply to that second request with a 6P Response with return code IANA_6TOP_RC_BUSY. In case concurrent transactions are supported, the protocol needs to guarantee atomicity. • If concurrent transactions are supported, during a particular transaction, the cells involved in that transaction MUST be locked until the transaction finishes. When transaction finishes, those cells are either allocated, or released. If a node receives a transaction while another transaction is ongoing, and that subsequent transaction involved the same cells, the mote MUST reply to that second request with a 6P Response with return code IANA_6TOP_RC_BUSY. • OPEN • use metadata to distinguish between unsupported concurrent transactions and no cells locked

11. interaction between6top and SF

12. upper layer • upper layer • sends/receives frames with neighbor node • SF • MUST specify the rule for a Transaction source to select cells to add to the CellList field in the 6P ADD Request. • MUST specify the rule for a Transaction destination to select cells from CellList to add to its schedule. • MUST specify the rule for a Transaction source to select cells to add to the CellList field in the 6P ADD Request. • MUST specify the rule for a Transaction destination to select cells from CellList to add to its schedule. • MUST specify what to do after an error has occurred (either the node sent a 6P Response with an error code, or received one). • 6top • terminates the 6P • TSCH • executes the schedule 6top SF IEEE802.15.4 TSCH

13. Requirements for an SF • https://tools.ietf.org/html/draft-ietf-6tisch-6top-protocol-00#section-5.2 • MUST specify an identifier for that SF. • MUST specify the rule for a node to decide when to add/delete one or more cells to a neighbor. • MUST specify the rule for a Transaction source to select cells to add to the CellList field in the 6P ADD Request. • MUST specify the rule for a Transaction destination to select cells from CellList to add to its schedule. • MUST specify a value for the 6P Timeout, or a rule/equation to calculate it. • MUST specify a meaning for the "Metadata" field in the 6P ADD Request. • MUST specify the behavior of a node when it boots. • MUST specify what to do after an error has occurred (either the node sent a 6P Response with an error code, or received one). • MUST specify the list of statistics to gather. An example statistic if the number of transmitted frames to each neighbor. In case the SF requires no statistics to be gathered, the specific of the SF MUST explicitly state so. • SHOULD clearly state the application domain the SF is created for. • SHOULD contain examples which highlight normal and error scenarios. • SHOULD contain a list of current implementations, at least during the I-D state of the document, per [RFC6982]. • SHOULD contain a performance evaluation of the scheme, possibly through references to external documents. • MAY redefine the format of the CellList field.

14. Layers • Upper: manage bandwidth in abstract units • Middle: map units to cells • Lower: update schedule

15. AOB ?

16. Thank you!